(Cleveland) - An internal Cleveland review shows some officers and supervisors broke police departmental policies while participating in a chase that ended with 13 officers firing 137 rounds and killing two unarmed people.

Mayor Frank Jackson says disciplinary action will be up to Chief Michael McGrath.

The review released Wednesday by city officials says most officers followed departmental rules.

About one-third of the force on duty, or 98 Cleveland officers and 15 supervisors, had a role in the Nov. 29 chase.

It began with a report of gunfire outside police headquarters and ended in a barrage of gunfire that killed 43-year-old driver Timothy Russell and 30-year-old passenger Malissa Williams. Both had cocaine in their systems.

The county prosecutor is conducting a separate grand jury investigation into possible criminal wrongdoing.

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